Bracket for step and stair construction



Nov.

G. C. PHILLIPS BRACKET FOR STEP AND STAIR CONSTRUCTION Filed March 8, 1950 5124 1. E w T a. GPkiZZi uw INVENTOR I BY l I I o ATTORNEYS.

United States Patent Ofiice 2,724,466 BRACKET FOR STEP AND STAIR CONSTRUCTION George C. Phillips, Homell, N. Y. Application March 8, 1950, Serial No. 148,383

1 Claim. (Cl. 18943) This invention relates to bracket construction for stairs and steps, the primary object of the invention being to provide a metal bracket embodying end supports and a plurality of demountable step plates so constructed and arranged that they may be secured together in the formation of step or stair stringers, the construction of which will be exceptionally light and durable, due consideration having been given to the strength of the bracket.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing:

Figure 1 is a sectional view through stairs or steps supportedby brackets, constructed in accordance with the invention.

Fig. 2 is an elevational view illustrating the several plates used in the construction of the bracket, as disconnected.

Fig. 3 is a perspective view of one of the supports to which the stair or step brackets are secured.

Referring to the drawing in detail, the steps or stairs comprise end supports embodying lower horizontal bars 5 that have wide inner ends 6 formed with a plurality of openings 7, the wide inner ends of the bars 5 being riveted, bolted, or otherwise secured to the wide ends 8 of the end supports. The wide ends 8 are formed at the lower ends of the vertical bars 9 of the end supports, the upper ends of the vertical bars 9 being extended laterally as at 10, where they are provided with openings for the reception of bolts by means of which the tread 11 or top step, is secured. It will of course be understood that in the construction of stairs or steps with the use of a bracket constructed in accordance with the invention, two of these end supports will be provided, one at each end of the stairs or steps.

The forward end of the horizontal bar 5 at each end of the stairs or steps, is extended laterally at 12, the laterally extended portion 12 having an opening to accommodate a bolt for securing the lowermost riser to the end support.

The stringersused with the end supports, include an upper outer plate 13 and a lower outer plate 14, the plate 13 having the riser edge 15 and the riser edge 16, the riser edge 16 being formed by the inwardly extended flange 17 formed with a series of openings, by means of which the riser 18 associated therewith, may be bolted thereto.

An inwardly extended flange 18 is disposed horizontally, and provides a support for the tread 19 which is bolted thereto.

, The lower outer plate 14 of the stringer, is provided with a horizontal flange 20 and a forward vertical flange 21, the horizontal flange 21') providing a support for the Patented Nov. 22,1955;

tread 19,; secured thereto, while, the; flange 21 providest means forattaching the riser to the forward end, of the stringer section. The, sections 13 and 14 of the; stringer are formed with inwardly extended longitudinally disposed; flanges 22, the ends'ofthe flanges 22 being, brought to-- gether when the varioustplatestof the stringers'are placed together in assembled relation,

The upper plate 13 and lower plate 1-4are securely held; together, by means of the intermediate stringer plate section, which is constructed to provide a riser edge 24 to be fitted against the inner surface of the flange 17 when the sections are assembled.

The intermediate plate section 23 is provided with an inwardly extended flange 25 that provides a support for the tread 19, the flange 25 being formed with bolt openings, through which bolts may be extended through the tread and flange 25, securing the tread in place.

Formed at the forward edge of the intermediate plate section 23, is an inwardly extended flange 26 which falls opposite to the riser edge 27 of the lower outer plate 14 providing a supporting surface against which the riser is secured.

Extending along the lower longitudinal edge of the intermediate plate section 23, is an inwardly extended flange 23 which is adapted to overlie the adjacent ends of the flanges 22 of the sections 13 and 14 in contact therewith, where the flanges 22 and 28 are bolted together by means of bolts which are extended through the openings formed in the flanges 22 and 28, providing an exceptionally strong step construction. The flanges 22 and 28, because they are secured in overlapped relation, also provide a guide for the assembling of the sections.

The reference character 29 indicates the uppermost plate section of a stringer, the plate section 29 being substantially rectangular in formation, with an inclined lower edge, the uppermost plate section being provided with an inwardly extended longitudinal flange 30 that rests on the flange 22 and is bolted thereto by means of bolts extended through the openings of the flanges 30 and 22.

An inwardly extended flange 31 is formed on the upper edge of the plate section 29 and provides a support for the uppermost tread 11, which is bolted to the flange 31.

The flange 32 is formed along the upper portion of the riser edge, and is also provided with openings through which securing members such as bolts or rivets may be extended, securing the riser thereto.

As shown, the various plate sections of the risers used in the step construction, are provided with a plurality of openings, which, when the various plates are brought together in assembled relation in the construction of a stringer, are formed so that securing members may be positioned therein securing the plates in assembled rela' non.

While I have shown and described the various plate sections as secured together by the use of bolts, it is to be understood that it is within the scope of the invention to secure these plates by any suitable means such as rivets, or welding. 1

From the foregoing it will be seen that due to the construction shown and described, I have provided a metal stair construction embodying stringers comprising a plurality of plate sections which when secured together provide an exceptionally light, strong and durable structure, and one wherein the sections may be secured together by persons unfamiliar with mechanics.

Having thus described the invention, what is claimed is:

Step construction comprising end supports, each end support including a lower horizontal bar and a vertical bar bolted to one end of said lower bar, said lower bar and vertical bar having laterally extended end. portions, stringers bolted to said horizontal and vertical bars, each stringer flanges formed along the lower edges of said plates and extending laterally therefrom, an intermediate plate section having a laterally extended flange formed along its lower edge, said latter flange and plate being secured to and overlapping the corresponding portions of said upper and lower outer plates, an upper plate section, a laterally extended flange formed along the lower edge thereof, said last mentioned flange abutting the adjacent upper end of the intermediate plate section flange, said upper plate section and its flange being secured to corresponding portions of-said upper outer plate.

UNITED STATES PATENTS Blair et al Oct. 10, 1950 

